Crane



'0. A. BINGAMAN.

CRANE.

APPLICATION FILED MAR.20,1919.

Patenasept. 14,1920.

2 SHEETSSHEET l.

Q| Li.,

C. A. BNGAMAN.

CRANE.

`APPLcATloN man MAH. 20, 1919.

1,352,575. Batendsept. 14,1920.

2 SHEETS-SHEET 2.

UNITED STATES yPATENT OFFICE.

`CHARLES A. BIN GAMAN, OF READING, PENNSYLVANIA.

CRANE.

Specification of Letters Patent. n Patented,Sept14, 192@ Application filed March 20, 1919. Serial No. 283,763.

it will be supported from a stationary col-v umn so that it can be swung completely around the column. l

A further object of the invention is to provide an improved crane in which provision is made for effectively overcoming frictional resistance to the rotation of the crane.

Another object of theinvention is to pro.- vide an improved construction of crane which is adapted to be mounted on a builtin column of a building.

The invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings: Figure 1 is a side elevation of a structure embodying the invention. Fig. 2 is a plan, the stationary column being shown in section. Fig. 2a is a detailsection through the boom. Fig. 3 is a vertical ,section. Fig. 4 is a plan of the rotatable member of the upper bearing between the crane and the column. Fig. 5 is a plan of the stationary member of said bearing. Fig. 6 is a plan of the stationary member of the lower bearing between the column and the crane and Fig. 7 is a plan of the member of the lower bearingwhich is secured to the crane. Fig. 8 is a section taken on line 8-8 of Fig. 4.

The invention is illustrated as appliedto a structural steel column 10 in a roundhouse and comprises aL horizontal boom 11, a vertical member 12, riveted to the boom, a diagonal member 13 having its ends riveted to the vertical vmember andA boom respec-V tively, and a tension-member 14, whichis providedwith a turn-buckle 15 to adjust its length, and extends between the upper end ofthe vertical member 12 and the medial portion of the boom. The latter consists of an I-beam 16 and a ianged guard-plate 17 which are adapted to serve as a runway or track for a wheeled carriage 18 on which a hoist 19 mounted. Any suitable hoist or carriage may be employed.

The'boom is formed to rotatably bring the hoist of the boom into different positions and is supported on the column by upper and lower bearings which permit the boom to make a complete revolution around the column and to support it so that it may be rotated without excessive resistance. These bearings are also adapted to be applied to a built-in column so that the invention may be rreadily applied to columns in buildings without tearing down the columns or wrecking columns especially for the crane.

The upper bearing comprises a stationary member 2O and a rotatable member 27. The stationary member 2O comprises an inner wall 21 adapted to extend around and be secured by bolts 22, or in any other suitable manner, to the structural steel or other column 10, an annular wall 23, a horizontal wall 24 and a vertical flange 25 whichq form a channel adapted to contain lubricant. Bearing rollers 26 which are rotatably supn ported by bolts` 27 extend through the wall 28 and iiange 25. The inner wall 21 is connected to the other walls ofL the stationary upper-bearingk member by radial webs 28. Bearing-member 2O is formed of semicircular sections with abutting ends and secured together by bolts 29. By. forming this member of sections in this manner, it can be applied'to a columnwhich extends between the floor and ceiling of a building, such as a `round-house or other structure, so as to form a bearing-member extending completely around the post and permitting a complete revolution of the boom. The rotatable member 27 consists of a ring having a horizontal wall 30 and a vertical ange 31 and a .lug or bracket 32 which extends between and is riveted to the channels forming the vertical member 12 of the crane.

This bracket is also extended, as at 33, to form a lug for the attachment ofthe upper end of tension-member 14. A thrust ring 34 of vhard metal is secured to the underside of the wall 30 of the rotatable upper-bearing member and has a conoidal under face to engage the tapered rollers 26 in the stationary upper bearing member. A pair of vertically extending friction rollers 35 are mounted ony spindles 36 which are mounted in pockets in the upper bearing memberand these rollers are adapted to engage the upper portion of the annular wall 23 of the stationary member at points opposite the boom to act as anti-friction thrust members, to resist the downward stresses of, and upon, the boom. To permit the rotatable member of the upper bearing to be applied around a built-in column 10it is formed of sections with abutting ends secured together by bolts 37. For the same purpose, the thrust ring 34 is formed oi semi-circular sections..

The lower bearing comprises a stationary member having an inner wall 41 which .1s secured to the column l() by bolts 42 or 1n any other suitable manner, a peripheral wall 43, and a connecting web 44. This member is also formed ot sections having abutting ends secured together by bolts 45 so that it can also be secured to a built-in column. The rotatable member 46 of the lower bearing comprises an arcuate portion 47 and a lug 4S which extends between and is secured to the channels forming the vertical member 12 of the crane. Anti-friction rollers 49 are mounted in pockets 50 adjacent the ends of the arcuate portion 47 and are adapted to bear upon the periphery of the wall 43 of the stationary member of the lower bearing. 'Ihe rollers 49 are disposed adjacent the boom to act as thrust members 'for receiving the inward stresses resulting from the load upon the boom.

In installing the crane, the stationary bearing members are iirst secured to the column, the sectional construction orE said memers permitting this to be done conveniently to an erected column. The sectional formation of the rotatable member of the upper bearing permits the boom to be connected to the upper stationary bearing member. IlVhen installed, the boom will be supported so that it is free to make a complete revolution around the column, and the bearingmembers are constructed to avoid any binding between the bearing members during rotat-ion.

The invention exemplifies a crane which is adapted to be mounted on a stationary column and to permit a complete revolution of the crane, so that the hoist can be moved f'ith facility over the greatest area. Also one in which the annular bearing members are adapted to be connected to a built-in post in which effective provision is made for overcoming binding between the bearing members.

The invention is not to be understood as restricted to the details set forth, since these may be modiiied within the scope of the appended claims, without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new' and desire to secure by Letters Patent, is:

l. In a swinging crane, the combination ot a boom, a hoisting device movably sustained by the boom, an anti-friction bearing for pivotally connecting to and supporting the boom from a stationary column so that the boom may revolve around the column, and an anti-friction thrust bearing separate from the supporting bearing each of said bearings comprising a stationary member extending around, separate from, and secured to, the column.

2. In a swinging crane, the combination of a boom, a hoisting device movably sustained by the boom, an anti-friction bearing for pivotally connecting to and supporting the boom from a stationary column so that the boom may revolve around the column, and upper and lower oppositely disposed anti-friction thrust bearings separate from the supporting bearings each comprising a stationary member extending around, separate from, and secured to, the column.

3. In a swinging crane, the combination of a boom, a hoist movably mounted on the boom, and means for pivotally connerie-,ting the boom to a stationary column comprising upper and lower bearings which permit the boom to make a complete revolution around the column, and formed of sections so the bearings can be applied to an erected column.

4. In a crane, the combination of a boom, comprising a horizontal member, a vertical member extending upwardly fromV the horizontal member and a tension member, an upper bearing comprising a member secured to a stationary column and a rotatable member to which the horizontal member is secured, and a lower thrust bearing comprising a member secured to the column and a member secured to rotate with the horizontal member, the stationary members bein0r formed of sections so they can be secured to an erected column.

5. In a crane, the combination of a boom, a supporting bearing comprising a member secured to a stationary column, a rotatable member secured to the boom, said members extending completely around the column, a thrust-bearing independent of the supporting bearing and comprising a ring-member secured to the column, and an arcuate member extending only part way around the column.

6. In a crane, the combination of a boom, a supporting bearing comprising a member secured to a stationary column, and a rotatable member secured to the boom, said members extending completely around the boom, and upper and lower thrust bearings independent of the supporting bearing and disposed at opposite sides of the column and having thrust engagement at opposite sides of the column only each thrust bearing comprising a stationary member extending around, separate from, and secured to, the column.

7. ln a crane, the combination of a boom, a supporting bearing comprising a ringmember extending around, separate from, and fixed to a stationary column, a rotatable member fixed to the boom, anti-friction devices between said members, and separate anti-friction devices between said members for resisting lateral thrust only.

S. in a crane, the combination of a boom, means for supporting the boom from a stationary column, comprising a sectional ringmember, a sectional ring-member fixed to the boom, anti-friction devices between said members and a separate thrust bearing.

9. ln a crane, the combination of a boom,

a supporting bearing for supporting the boom from a stationary column comprising sectional ring-members secured to the column and to the boom respectively, a separate thrust bearing comprising a sectional ring secured to the column, and an arcuate member secured to the boom.

l0. ln a crane, the combination of a boom comprising a horizontal member, a Verti-v cally extending member and a tension member, a bearing comprising a ring secured to a stationary column and a rotatable ring secured to rotate with the boom, anti-fric tion devices between said rings to receive the vertical stresses and anti-friction devices between said rings and oppositely disposed with respect to the boom to resist lateral stresses, and a lower bearing comprising a ring secured to the column and having a peripheral bearing surface and a member fixed to and adjacent the boom and engaging said surface.

l1. ln a crane, the combination of a boom comprising a horizontal member, a vertically extending member and a tension member, a bearing comprising a ring secured to a stationary column and a rotatable ring secured to rotate with the boom, anti-friction devices between said rings to receive the vertical stresses and anti-friction devices between said rings and oppositely disposed with respect to the boom to resist lateral stresses, and a lower bearing comprising a ring secured to the column and having a peripheral bearing surface and a member fixed to and adjacent the boom and engaging said surface, said rings being formed in sections to permit them to be secured to an erected column.

12, In a crane, the combination of a boom comprising a horizontal member, a vertically extending member and a tension member, a bearing comprising a ring secured to a stationary column and a rotatable ring secured to rotate with the boom, anti-friction devices between the rings to receive the vertical stresses and anti-friction devices between said rings and oppositely disposed with respect to the boom to resist lateral stresses, and a lower bearing comprising a ring adapted to be secured to the column and having a peripheral bearing surface and an arcuate member fixed to and adjacent the boom and anti-friction devices in said arcuate member.

CHARLES A. BINGAMAN. 

